<template>
    <div>
        <!--面包屑导航区-->
    <el-breadcrumb separator="/">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片视图区域-->
    <el-card >
        <!--搜索与添加区域-->
        <el-row :gutter="24">
            <el-col :span="8">
                <el-input clearable @clear="getUserList" placeholder="请输入内容" v-model="queryInfo.query">
                <el-button slot="append" icon="el-icon-search"  @click="getUserList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
        </el-row>

        <!--用户列表区域-->
        <el-table :data="userList" border stripe>
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态" >
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="185px">
                <template slot-scope="scope">
                    <!--修改按钮-->
                    <el-tooltip  effect="dark" content="修改" placement="top" :enterable="false">
                    <el-button @click="showEditDialog(scope.row.id)"  type="primary" icon="el-icon-edit" size="mini"></el-button>
                    </el-tooltip>                    
                    <!--删除按钮-->
                    <el-tooltip  effect="dark" content="删除" placement="top" :enterable="false">
                        <el-button type="danger" @click="removeUserById(scope.row.id)" icon="el-icon-delete" size="mini"></el-button>
                    </el-tooltip>
                    <!--分配角色按钮-->
                    <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                    <el-button  @click="setRole(scope.row)" type="warning" icon="el-icon-setting" size="mini"></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>
        </el-table>
        <!--分页区域-->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>
        <!--添加用户的对话框-->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%" @close="addDialogClosed">
            <!--内容主体区域-->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" >
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!--底部区域-->
            <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        
        <!--修改用户的对话框-->
        <el-dialog
            title="修改用户信息"
            :visible.sync="editDialogVisible"
            width="50%" @close="editDialogClosed">
            <!--内容主体区域-->
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px" >
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!--底部区域-->
            <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%" @close="setRoleDialogClosed"
        >
        <div>
            <p>当前用户：{{userInfo.username}}</p>
            <p>当前角色：{{userInfo.role_name}}</p>
            <p>分配新角色：
                <el-select v-model="selectedRoleId" placeholder="请选择">
                <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                </el-option>
                </el-select>
            </p>
        </div>
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
        
</el-dialog>    

    </el-card>
    </div>
</template>

<script>
export default {
    data(){
        //验证邮箱的规则
        var checkEmail = (rule,value,cb) =>{
            const regEmail = /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/;
            if(regEmail.test(value)){
                //合法的邮箱
                return cb()
            }
            cb(new Error("请输入合法的邮箱"))
        }
        //验证手机号码的规则
        var checkMobile = (rule,value,cb) =>{
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/ 
            if (regMobile.test(value)) { 
                //合法的手机号码
                return cb() 
            }
            cb(new Error('手机号码格式不正确'))     
        }

        return{
            //获取用户列表的参数对象
            queryInfo:{
                query:'',
                //当前页数
                pagenum:1,
                //当前页数据个数
                pagesize:2
            },
            userList:[],
            total: 0,
            //控制添加用户的对话框的显示与隐藏
            addDialogVisible: false,
            //控制修改用户的对话框的显示与隐藏
            editDialogVisible :false,
            //添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            //添加表单的验证规则对象
            addFormRules: {
                username: [
                    {required: true,message: '请输入用户名',trigger: 'blur'},
                    {min: 3,max: 10,message: '用户名的长度在3~10个字符之间',trigger: 'blur'} 
                ],
                password: [
                    {required: true,message: '请输入密码',trigger: 'blur'},
                    {min: 6,max: 15,message: '密码的长度在6~15个字符之间',trigger: 'blur'} 
                ],
                email: [
                    {required: true,message: '请输入邮箱',trigger: 'blur'},
                    {validator: checkEmail, trigger: 'blur'}
                ],
                mobile: [
                    {required: true,message: '请输入手机号码',trigger: 'blur'},
                    {validator: checkMobile, trigger: 'blur'}
                ]
            },
            editForm: {},
            //修改表单的验证规则对象
            editFormRules: {
                email: [
                    {required: true,message: '请输入邮箱',trigger: 'blur'},
                    {validator: checkEmail, trigger: 'blur'}
                ],
                mobile: [
                    {required: true,message: '请输入手机号码',trigger: 'blur'},
                    {validator: checkMobile, trigger: 'blur'}
                ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible :false,
            // 需要被分配角色的用户信息
            userInfo:{},
            // 所有角色的数据列表
            rolesList: [],
            // 已选中的角色id
            selectedRoleId:''

        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
            const {data:res } = await this.$http.get('users',{params: this.queryInfo })
            //console.log(res)
            if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
            this.userList = res.data.users;
            this.total = res.data.total;
        },
        //监听 pagesize 改变的事件
        handleSizeChange(newSize){
            //console.log(newSize)
            this.queryInfo.pagesize = newSize;
            this.getUserList()
        },
        //监听页码值改变的事件
        handleCurrentChange(newPage){
            //console.log(newPage)
            this.queryInfo.pagenum = newPage;
            this.getUserList()
        },
        //监听 Switch状态的改变
        async userStateChanged(userInfo){
            //console.log(userInfo)
            const {data:res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
            //console.log(res)
            if(res.meta.status !== 200) {
                userInfo.mg_state = !userInfo.mg_state
                return this.$message.error('更新用户状态失败！')
            }
            this.$message.success('更新用户状态成功！')
        },
        //监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击确定按钮，进行添加用户
        addUser(){
            this.$refs.addFormRef.validate( async valid=>{
                //console.log(valid)
                if(!valid) return
                //可以发起添加用户的请求
                const {data:res} = await this.$http.post('users',this.addForm)
                //console.log(res)
                if(res.meta.status !== 201) return this.$message.error('添加用户失败！')
                this.$message.success('添加用户成功!')
                //隐藏添加用户的对话框
                this.addDialogVisible = false
                this.getUserList()
            })
        },
        //展示修改用户的对话框
        async showEditDialog(id){
            const {data:res} = await this.$http.get('users/'+id)
            if(res.meta.status !== 200)   return this.$message.error('查询用户信息失败!')          
            
            this.editForm = res.data
            this.editDialogVisible = true
            //console.log(editForm)
            //console.log(res)
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //修改用户的表单预验证
        editUserInfo(){
            this.$refs.editFormRef.validate( async valid=>{
                //console.log(valid)
                if(!valid) return
                //可以发起修改用户的请求
                const {data:res} = await this.$http.put('users/' + this.editForm.id,{
                    email: this.editForm.email , mobile: this.editForm.mobile
                })
                //console.log(res)
                if(res.meta.status !== 200) return this.$message.error('更新用户信息失败!')
                
                //隐藏添加用户的对话框
                this.editDialogVisible = false
                //刷新数据列表
                this.getUserList()
                //提示修改成功
                this.$message.success('更新用户信息用户成功!')
            })
        },
        //根据id删除用户信息
        async removeUserById(id){
            //弹框询问用户是否删除数据
            const confirmResult =await  this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
                }
            ).catch(err => err)
            //如果用户确认删除，则返回值为字符串 confirm
            //如果用户取消删除，则返回值为字符串 cancel
            //console.log(confirmResult)
            if(confirmResult !== 'confirm'){
                return this.$message.info('已取消删除')
            }
            const {data:res} = await this.$http.delete('users/'+id)
            if(res.meta.status !== 200) return this.$message.error('删除用户失败！')
                this.$message.success('删除用户成功!')
                //刷新用户列表
                this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo){
            this.userInfo = userInfo
            
            // 在展示对话框之前，获取所有角色列表
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
            this.rolesList = res.data

            this.setRoleDialogVisible = true
        },
        // 点击确定按钮，为用户分配角色
        async saveRoleInfo(){
            if(!this.selectedRoleId) return this.$message.error('请选择要分配的角色')
            const {data:res} = await this.$http.put('users/' + this.userInfo.id +'/role',{rid:this.selectedRoleId})
            if(res.meta.status !== 200) return this.$message.error('更新角色失败！')
            this.$message.success('更新角色成功!')
            // 更新用户列表
            this.getUserList()
            // 隐藏更新角色对话框
            this.setRoleDialogVisible = false
        },
        // 监听分配角色对话框关闭事件
        setRoleDialogClosed(){
            this.selectedRoleId= ''
            this.userInfo = {}
        }
        
    }
}
</script>

<style lang="less" scoped>
    
</style>